毕设基本摘要
摘要：本基坑工程支护设计，根据工程实际情况分为两个支护部分：由于基坑东、南两面地上有需要重点保护的四和院及古树，方案整体均采用刚度较好的钻孔灌注桩支护，西、北两面无需要保护的建筑物，方案为-5.00m以上采用土钉墙支护，以下采用钻孔灌注桩支护。并且根据现场条件的不同，支护形式及参数可有所改动。以此来满足地上结构的建造要求，并且使基坑周遍建筑及树木不受基坑开挖影响。另根据所掌握该区域的水文地质资料，本工程宜采用大口径管井。该方案的优点：施工速度快，减少降水费用。
在施工过程中，做好各方面的准备及施工计划，严把质量关，保证工期。做到文明施工，安全施工。其中，对基坑支护结构的侧向位移观测、地表沉降及临近建筑物的沉降观测自土方开始后一直持续到结构完工，如出现问题立即修正。做到不影响基坑工程施工，不影响需要保护的建筑物及树木，铸造精品工程，让业主满意。
关键词：基坑支护，护坡桩，土钉墙，管理
Abstract: This hole excavated for building foundation project supports and protections design, divides into two supports and protections parts according to the project actual situation: because east and south both sides ground of the hole excavated for building foundation have the need key protection the four courtyard and the old tree, the plan whole uses the rigidity good drill hole filling pile supports and protections, west, north both sides do not have the building which needs to protect, the plan for - 5.00m above use the earth nail wall supports and protections, the following use the drill hole filling pile supports and protections. And acts according to the field condition the difference, the supports and protections form and the parameter may have the modification. Satisfies the ground structure by this the construction request, and causes the hole excavated for building foundation all around construction and the trees not the structure excavation influence. Acts according to in addition grasps this region the hydrology geological data, this project uses the heavy-caliber tube well suitably.This plan merit: The construction speed is quick, reduces the precipitation expense.
In the construction process, prepares for various aspects and the construction plan, strictly quality pass, guarantee time limit for a project. Achieves the civilized construction, safe construction.. Among them, observes, the surface subsidence and the approaching building settlement observation to the hole excavated for building foundation supports and protections structure lateral displacement starts since the folk recipe to continue to the structure to finish continuously, if has the problem to revise immediately. Achieves does not affect the hole excavated for building foundation project construction, does not affect the building and the trees which needs to protect, the casting high-quality goods project, lets the owner be satisfied.
Key words: The hole excavated for building foundation supports and protections, protects the slope stake, the earth nail wall, the management
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